Implement for punching, perforating, or stamping.



APPLICATION IELLED NOV. 30, 1908.

Patented Sept. 21, 1909.

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UNITED srilrnsigrnnr orrrca EDMUND WALTER THURGAR, OF HYDE PARK, LONDON,ENGLAND.

IMPLEMENT FOR PUNCHING, PERFORATING, 0R STAMPING.

Application filed November 30, 1908.

To all whom it 'may concern:

Be it known that I, EDMUND WALTER Tirunsiin, a subjectof the King ofGreat Britain, residing at Hyde Park, in the county of London, England,have invented certain new and useful Improvements in Implements forPunching, Perforating, or Stamping, of which the following is aspecification.

This invention relates to tools or implements for removing pivot pins orrivets; and its prime object is to provide a simple and inexpensiveimplement, especially useful to jewelers, by means of which pivot-pinsor rivets may be readily and quickly removed from articles of jewelryand fine and delicate mechanisms.

Another object of the invention is to provide means whereby theimplement may be employed as a perforator, to perforate or eye telegramblanks, or forms, and other papers.

Vith these and other objects in view, the invention consists essentiallyof a pair of jaws, pivoted together, provided with an interchangeabletool carrying plunger, operative in suitable guides, and with means forregulating or varying the movement of said plunger, each jaw beingprovided with a suitable handle.

The invention also consists of the novel arrangement and combination ofthe several parts, as will be hereinafter fully described in thisspecification and briefly stated in the Y claims.

In the drawing-Figure 1. is a side View of my improved tool orimplement, and Fig. 2 a vertical section through the forward ends of thejaws.

In the several views, the numeral 1 indicates the upper and 2 the lowerof a pair of jaws, pivoted together and provided with suitable handles.The upper jaw, or jaw 1, is of angular shape, and is provided at itsforward end with a lip or projection 3, to which is attached abifurcated guide-plate l. The lower jaw, or jaw 2, corresponds in shapeto the upper jaw, but is much shorter, and its forward end is providedwith an aperture 5 through which a tool-carrying plunger 6 is adapted tooperate, and be guided in its movements thereby. The toolcarryingplunger is provided with a concave or socketed-head 7 and is operativelyconfined between the prongs of the bifurcated guide-plate 4. Seated inthe socketed-head Specicaton of Letters Patent.

Patented Sept. 21, 1909.

serial No. 465,354.

is a ball 8 which is adapted to bear against the under face 9 of theupper jaw to provide an approximately frictionless bearing. The face 9is slightly curved, and said face, toget-her with the guide-plate, whichis correspondingly curved, forms a run or guideway l() for the ball andsocketed head of the tool carrying plunger. The lower jaw is providedwith a work-support or anvil 11, having in its outer end a verticalaperture or passage 12, through which the pin or rivet passes, as it isbeing forcibly removed by the forced action of the tool carryingplunger. The lower end of the tool-carrying plunger is provided with atenon 13, to which may be fitted various punching or perforatingtool-points 111. Any well known means for removably attaching thetool-points to the tool-carrying plunger may be employed, in providingfor the use of interchangeable tools.

In order that the tool-point, whether it be a punch or a perforator, maynot have to exceed the distance itis required to travel or move, Iprovide a distance regulator consisting of an adjustable screw 15, onthe upper aw, and a stop 16, on the lower jaw. It will be obvious thatby adjusting the screw, with reference to the stop, the travel ormovement of the tool-carrying plunger may be regulated to any requireddistance. I do not wish to be understood as limiting myself to anyparticular form of regulating` device, as various devices may be devisedfor regulating the distance of travel of movement of the tool-carryingplunger.

An implement or tool constructed in accordance with my invention isespecially useful to manufacturing and repairing jewelers, as pivot pinsor rivets may be quickly and easily removed from various articles ofjewelry, by holding the article upon the anvil or support, with the pinor rivet directly over the aperture or passage 12, and forcing the jawstoward each other, until the end of the regulating-screw, which has beenpreviously adjusted, contacts with the stop 16, when the pin or rivetwill have been forced out of its place or seat and through the apertureor passage 12. In the operation of removing the pin or rivet, it will benoted that the upper jaw, which is much longer and projects over thelower jaw, is caused, by the forced approach of the jaws, to ride overthe ball bearing head of the tool carrying plunger and force the plungerthrough the guide-aperture 5 iii a perfectly true line, said plunge-rbeing guided in its movement by said aperture. y

Various modifications or vchanges in' the details of construction of myimproved implement or tool, may be made wit-hout departing from thescope of the invention or sacrificing the principle thereof.

AHaving thus fully described my invention what I claim, is

l. A tool or implement for punching, cutting, etc., comprising a pair ofpivoted jaws, one of said jaws being provi-ded with' a guide-way, aplunger, operative in said guide-way, and provided with a ball-bearinghead engaged by one of the jaws to operate the same. v

2. In a tool or implement for punching, cutting, etc., the combinationwith a pair of pivoted jaws, of a reciprocatory plunger, having itsupper portion loosely confined in a Y'uide-plate attached to the upperjaw, anc its lower portion operative in a guideway in the lower jaw. j j

'8. In a toolor implement for punching, cutting, etc., the combinationwith a pair of pivoted jaws, of a reciprocatory plunger, havin-g itsupper portion loosely confined' in a guide-plate attached to the upperjaw, and its'lower portion operative in a guideway in the lower jaw, andmeans for controlling' the distance of travel of the plunger.

4., A tool or implement for punching, cutting, etc., comprising a pairof pivoted jaws, the upper .jaw being provided with a horizontalguide-way and the lower .jaw with a vertical guide-way, and a plungeroperative in the guideavays and operated bythe upper jaw.

5. A, tool or implement for punching, cutting, etc., comprising a pairof pivoted jaws, each jaw being provided with a guideway, areciprocatory plunger operative in -said guideeway's, and means forcontrolling the distance of travel of said plunger.

'6. In 'a tool or implement for punching, cutting, etc., the combinationwith a pair of pivoted jaws, one ot' said jaws being provided with` abearing-surface and the other with a guide-way, of a plunger operativein said guide-way, and provided with a ballbearing head in operativeContact with the bearing surface of the jaw, whereby an approximatelyfrictio'nles's bearing is provided.

7.4 In -a tool or implement 'for punching, cutting, etc., Ythecombination with a pair of pivoted jaws, one of said being provided witha bearing-surface and the other with guidevvay, ot' plunge", operativein said guide-way, and provided 'with 'a ball bearing head, and meansfor controlling the distance of travel of said plunger.

8. In a toolor implement for punching', cutting, etc., vthe combinationwith a pair of pivoted jaws, one of said jaws being provided 'with abearinglsurtace and the other with a guide way and a Vwork-support, 'ofa plunger operative in said guide-'way and provided with a ballbearingphead.

9. In fa tool or implement vfor punching, cutting, etc., the combinationwith 4a pair of pivoted jaws, one ot' said jaws being provided with abearing-surface and4 the other vjaw with a guide-way and a work-support,

of a plunoer, operative in said Vguide-way and provided with aball-bearing head, and means for controlling the distance of travelofthe plunger. Y i l I-n testimony whereof I ailiii my signature inpresence of two witnesses.

, EDMUND WALTER THURGAR. Witnesses:

H. D. JAMESON, A. NU'T'iING.

